Add prebuilts for amazonlinux2023

### Description amazonlinux2023 was added in Swift 6.3.1. We need to add it to the list of PrebuiltPlatforms and generate prebuilts for it. ### Expected behavior _No response_ ### Actual behavior _No response_ ### Steps to reproduce _No response_ ### Swift Package Manager version/commit hash _No response_ ### Swift & OS version (output of `swift --version && uname -a`) _No response_